<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Google Maps</title>
</head>
<body>
<h1>My First Google Maps</h1>
<div id="map" style="width: 400px; height: 400px; background: yellow">
    My Map will go here
</div>
</body>
<script src="googlemaps.js"></script>
<script src="https://maps.googleapis.com/maps/api/js?callback=myMap"></script>
</html>